package diamond.day02;

/**
 * 使用同步方法解决实现Runnable接口存在的线程安全问题
 */
public class WindowTest3 {
    public static void main(String[] args) {
        Window3 w = new Window3();
        Thread t1 = new Thread(w);
        t1.setName("窗口一");
        Thread t2 = new Thread(w);
        t2.setName("窗口二");
        Thread t3 = new Thread(w);
        t3.setName("窗口三");
        t1.start();
        t2.start();
        t3.start();
    }
}

class Window3 implements Runnable{
    private int ticket =100;
    public void run() {
        while (true){
            synchronized(this) {
                show();
            }
        }
    }

    private synchronized void show(){//同步监视器：this
        if (ticket > 0) {
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(Thread.currentThread().getName() + ":卖票，票号为：" + ticket);
            ticket--;
        }
    }
}
